Eukaryota  >  Metazoa  >  Chordata  >  Chondrichthyes  >  Squaliformes

Family	Genus	Species
Centrophoridae	2	43
Dalatiidae	5	8
Etmopteridae	4	73
Oxynotidae	1	3
Somniosidae	7	13
Squalidae	2	82